Why it fills up so mysteriously
A free Google account comes with 15 GB, and that allowance is pooled across three services:
- Gmail — every message, and crucially every attachment, including in Spam and Trash
- Google Drive — files you upload, and files in Drive's trash
- Google Photos — photos and videos backed up from your phone
So you can be diligent about Drive, never upload anything, and still hit the limit — because three years of phone videos went into Photos, or because a decade of newsletters with PDF attachments sits in Gmail. The warning you see is usually raised by whichever service you happened to be using, which is why the message often points at the wrong place.
See the breakdown first
Before deleting anything, look at where the space actually went. Go to one.google.com/storage. You don't need a paid plan to use this page.
It shows a bar split by service, and — more usefully — a storage manager that surfaces the specific things worth clearing: large emails with attachments, items sitting in trash, large files in Drive, and unsupported videos that can never be played. Working from that list is far more efficient than scrolling through folders guessing.
Whatever the biggest slice is, start there. Deleting 400 small documents from Drive when Photos is using 11 GB is wasted effort.
Gmail: the search terms that find the big stuff
Almost all Gmail storage is attachments, not text. Paste these into the Gmail search box:
| Search | What it finds |
|---|---|
has:attachment larger:10M | Every email with an attachment over 10 MB — usually the top of your list |
larger:25M | The genuine monsters. Often a handful of emails worth hundreds of megabytes |
has:attachment older_than:3y | Old attachments you'll almost certainly never open again |
in:spam | Spam still counts toward your quota until it's purged |
in:trash | So does the trash |
from:noreply larger:1M | Automated mail with heavy attachments — statements, receipts, reports |
Sort through the results, save anything you want to keep (download it, or move it to a computer), then delete. Two things people forget:
- Deleting from the inbox only moves mail to Trash, where it still occupies your quota for 30 days. After deleting, open Trash and choose Empty Trash now. Do the same in Spam.
- Storage figures update slowly. After a big cleanup, the number on the storage page can take some hours to catch up. Don't delete another thousand emails because nothing appeared to change in five minutes.
Photos: usually the largest share
For most people, Google Photos is the biggest consumer, and video is the reason. A few minutes of phone video can outweigh a thousand photographs.
Check your backup quality setting
In the Google Photos app, open your profile picture → Photos settings → Backup and look at the upload quality. "Original quality" uploads files at full size. "Storage saver" compresses them, which for phone photos viewed on phone screens is a difference most people never notice — and it consumes considerably less space.
Changing this affects future uploads. Google has at times offered a tool to recompress existing originals to storage saver, which can recover a large amount of space in one action; look for a "recover storage" option in the same settings area. Note that this is not reversible — the original-quality versions are replaced.
Clear the two hidden piles
- Trash / Bin. Deleted photos remain for around 60 days and still count. Empty it deliberately.
- Archive. Archived photos are hidden from the main grid but still stored. If you archived a few thousand screenshots to tidy up, they're still using space.
Delete the categories you don't need
Search your library for screenshots. Most people have thousands, and almost none are worth keeping. The same goes for burst shots, blurry duplicates, and downloaded images from messaging apps. Google Photos' own storage manager flags large videos, blurry photos, and screenshots as suggestions — that list is a genuinely good place to start.
If a photo exists only in Google Photos, deleting it there deletes it everywhere. Download anything irreplaceable first — Google Takeout can export your entire library as an archive. Do the export, confirm the files actually open, and only then start clearing.
Drive: large files and the trash trap
In Drive, use the Storage view in the left sidebar (not "My Drive"). It lists every file you own sorted by size, which is exactly what you want and is not the default view anywhere else.
Then:
- Empty the Drive trash. Files there count against your quota until permanently removed. This alone resolves a surprising number of "I deleted loads of files and nothing changed" cases.
- Look for old video and installer files. Screen recordings, exported videos, and downloaded installers are usually the largest items by a wide margin.
- Check for duplicate uploads. Files named "report (1).pdf", "report (2).pdf" and so on are a common sign of a sync that ran twice.
- Watch out for Docs, Sheets, and Slides. Files created in these apps have counted toward your quota since mid-2021. Older ones created before that generally do not. So a long-standing account may have a mix of both, which makes the totals look inconsistent.
What doesn't count against you
Useful to know, so you don't waste time deleting the wrong things:
- Files other people shared with you. They count against the owner's storage, not yours. Removing them from your Drive frees nothing.
- Files in a shared drive in a workplace Google Workspace account count against that organisation's pool.
- Emails you sent are in your account like any other message and do count — a large attachment you sent is stored in your Sent folder. Search
in:sent larger:10M.
Also worth knowing: a personal Google account that goes completely unused for two years may have its content removed under Google's inactivity policy. If you keep a spare account purely as an archive, sign into it occasionally.
What happens if you stay full
Once you're over the limit, several things stop working, and not all of them are obvious:
- You cannot upload new files to Drive or back up new photos.
- You cannot create new files in Docs, Sheets, or Slides.
- You stop receiving email. Incoming messages are bounced back to the sender. This is the one that actually hurts, and it's easy to miss until someone tells you their message never arrived.
You keep access to everything already there — nothing is deleted for being over quota in the short term — but the account becomes read-only in practice.
If you'd rather not spend the afternoon deleting
Two legitimate alternatives to a cleanup:
- Pay for more. The smallest Google One tier costs very little per month and takes ten seconds to set up. If your time is worth anything, this is frequently the rational choice.
- Move the archive elsewhere. Export photos with Takeout to an external drive, or move long-term files to a different service. Keep the cloud account for what you actually use day to day.
Whichever you choose, do the storage-manager review first. Knowing that 9 GB of your 15 is old video from a phone you no longer own changes the decision.